Granted Patent
Utility
US 4,197,983 · App. 05/706,353
Hanger-clip closure for casings
Inventors:
Vytas A. Raudys, Ronald Robert DeVitto
Patented Case
View Patent ↗
Granted: Apr 15, 1980
Filed: Jul 19, 1976
Inventors
Vytas A. Raudys
Ronald Robert DeVitto
Assignee (at issue)
Union Carbide Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.